How to Avoid Hand Cramps While Watering or Power Washing

I've done my share of Summer yard work, and endured numerous hand cramps from those pressurized hose and power washer nozzles.  In all that time, I can't believe I never thought of this!

Holding down one of those triggers gets downright painful after awhile.  So why not use something to hold the trigger down for you?  Check it out: